Edwards, who will return in a flashback since his character died of a brain tumor in the 2001-2002 season, isn't the only one trying to coax Clooney back. "I know they want to do everything they can to bring everybody back," he said of the producers. "But who knows what'll happen."

So far, the only other originating cast member on board is
Noah Wyle. Edwards has filmed his episode, which will air Nov. 13.
Adam Bryant